When he was a baby, though, he used to projectile vomit
when I drank milk. I was breastfeeding. When I stopped drinking milk, the vomiting
subsided. We've steered him toward lactose free milk ever since, but he still can tolerate, to some degree, dairy products. His bouts have been so bad lately, though, I think I'm going to only get soy ice cream and cheese products.
So, Hasbro told us IBS and didn't offer a whole lot of solutions except to eat fiber.